core_services: Add mojo:surfaces_service to core_services.

components/surfaces/surfaces_output_surface.h

Index: components/surfaces/surfaces_output_surface.h
diff --git a/components/surfaces/surfaces_output_surface.h b/components/surfaces/surfaces_output_surface.h
index cbec4672361e0ca93c91b757aa1256334c7a477b..6b8f590b220fb77dbbfb98dfac6de16ac644a1cb 100644
--- a/components/surfaces/surfaces_output_surface.h
+++ b/components/surfaces/surfaces_output_surface.h
@@ -7,7 +7,7 @@
 
 #include "cc/output/output_surface.h"
 
-namespace mojo {
+namespace surfaces {
 
 // An OutputSurface implementation that directly draws and
 // swaps to an actual GL surface.
@@ -24,6 +24,6 @@ class DirectOutputSurface : public cc::OutputSurface {
   base::WeakPtrFactory<DirectOutputSurface> weak_ptr_factory_;
 };
 
-}  // namespace mojo
+}  // namespace surfaes
 
 #endif  // COMPONENTS_SURFACES_SURFACES_OUTPUT_SURFACE_H_